I was wondering if it’s possible to have game defined regions in Unity trigger a reverb send in FMOD? For a further description this is how it’s done in Wwise https://www.youtube.com/watch?v=jY8_65l5Zn4 (see 10:20).

It’s not possible to “trigger a send” in FMOD Studio, but you could easily automate the volume of a send on a parameter, allowing you to control its value by changing the parameter’s value.

Given that most reverb effects tend to cover a wide variety of events, however, it’s generally easier to create snapshots whose scope includes the volume of your reverb return buses. You can simply trigger and untrigger those snapshots (and if needed, adjust their intensity) based on the player’s position to adjust the amount and type of reverb in play.